Heatsink



FIG. 1 is a top perspective view of the heat sink.

FIG. 2 is a left side elevation view of the heat sink of FIG. 1.

FIG. 3 is a right side elevation view of the heat sink of FIG. 1.

FIG. 4 is a front elevation view of the heat sink of FIG. 1.

FIG. 5 is a rear elevation view of the heat sink of FIG. 1.

FIG. 6 is a top plan view of the heat sink of FIG. 1; and,

FIG. 7 is a bottom plan view of the heat sink of FIG. 1.

Portions or features of the heat sink not shown in the drawings form no part of the claimed design. The evenly dotted broken lines in the drawings illustrate unclaimed features of the claimed design and form no part of the claimed design. 

CLAIM The ornamental design for a heat sink, as shown and described. 